How to Address Moisture Issues in Earth Sheltered Living?

Waterproofing and Sealing

To prevent water infiltration, homeowners should focus on proper waterproofing of the earth sheltered structure. This includes applying a waterproof coating to concrete surfaces, sealing any cracks or joints, and ensuring the integrity of the earth berms. A minimum of 1/4 inch of waterproofing coating should be applied to the exterior of the structure. Additionally, all windows and doors must be properly sealed to prevent water intrusion.

Controlling Humidity Levels

Earth sheltered homes are prone to high humidity levels due to the surrounding soil. To manage humidity, it’s essential to ensure adequate ventilation. A minimum of 1 air change per hour is recommended to maintain a healthy indoor environment. This can be achieved through the installation of dedicated ventilation systems or by incorporating passive ventilation techniques, such as clerestory windows and solar chimneys. Dehumidifiers can also be used to control humidity levels, especially during humid summer months.

Managing Water Run-off

To prevent water accumulation around the earth sheltered home, proper water run-off management is crucial. This includes designing the earth berms to slope away from the structure, ensuring a minimum of 6 inches of slope per foot to prevent water accumulation. Additionally, installing a French drain system or a swale can help to redirect water away from the home and prevent erosion. Regular maintenance of the earth berms, including grading and re-vegetation, can also help to prevent water accumulation and maintain the integrity of the structure.